Crested Philippine Violet (Barleria cristata) Care: Under glass, grow in soil based potting mix with additional well rotted compost, in full light, but shaded from hottest sunlight. When in growth, water freely and apply a balanced liquid fertilizer monthly; water sparingly in winter. Pot on or top dress in spring.

Source: Various resources including The American Horticultural Society A to Z Encyclopedia of Garden Plants and the USDA